Information quickly becomes out-of-date and maintenance manuals are often only available as hardcopy or on workstations far away from the airplane or automobile. In addition, the maintenance information is not tailored to the actual work order, requiring the engineer to perform unnecessary steps before viewing the information that is actually needed to perform the repair.

The scope of the STARS project is to cover both the conversion of paper technical manuals to Interactive Electronic Technical Manuals (IETM), as well as the use of IETMs in the field for onsite inspection and repair. The STARS3 work package focuses on the onsite inspection and repair area.

Currently, Original Equipment Manufacturers (OEMs) of subsystem components provide IETM-documentation for their products to the system manufacturer for conversion, if needed, and inclusion into their system's overall IETM-documents. An example is the documentation provided by an engine supplier to an aircraft manufacturer. 

This method of IETM development and management is usually very expensive because the OEM may use different or less effective authoring tools and processes and additional overhead costs of the system manufacture are typically added to those already charged by the OEM.

A new way is to distribute the IETM development and maintenance process across the OEMs, third party IETM authoring organizations, and system manufacturer, and transfer the IETM products directly to a central database (CDB) of the system's end user (e.g., the organization flying and maintaining the aircraft).
The goal of inspections is to find discrepancies between the specification and the actual status or behavior of a system. Example of discrepancies in an aircraft can be corrosion at the surface or low oil in the engine. 

Currently, inspections are performed using an IETM check list and a two-dimensional image of the system being inspected. Many times the location of discrepancies is identified by marking the surface with a grease pen or noting distances from physical aircraft references on a two-dimensional image. , e.g., structural frame and rivets.

The IETMs need to interact with a three-dimensional model of the system and a way of pointing to a descrepancy that marks the location and description of the discrepancy on a virtual "space sticky" attached exactly to the location where the descrepancy was discovered.

Note: This user task should be refined into use cases by the user interface team.

Note: This user task should be refined into use cases by the Infoservice team. The resulting use cases should include location tracking of the technician such that the system can provide real time directions.

2.The system responses with showing two new functional buttons "IETMGuideline" and "IETMMessage'".

3. He clicks the "IETMGuideline" button to read the online document. But he is puzzled of something too. 

4. He decides to ask help from the expert. Then, he activates the "IETMMessage" Function. The system responses by schowing a list of experts' correspondence address and related informations.

5. He chooses a proper person and sends a message to him. After that, he exits the HELP window.

Note: This user task should be refined into use cases by the IETM team. It should include all the use cases necessary for a supervisor to create a work order and to notify a technicial to execute it.

Note: This is the STARS2 scenario. This will be revised sometimes in the future by the instructors/coaches to complete the specification.

Note: This user task should be refined into use cases by the IETM team. The resulting use cases should explain the steps to setup an IETM such that it can be used during the Initiate Work Order user task.

2. The interruption is found, when the actors want to communicate.

3. The A:Technician reparied it.

2.He clicks CopyIETM to make a copy of the old IETM version, because the onging work oder makes use of it.

3.He activates the EditText function, and select the UT:Help section to change the content of it. 

4.After that, he activates the EditImage function to add a new picture into the document.

5.And then, he wants to save it using UC:CommitIETM function. But, by mistake he clicks the DeleteIETM button.

6.Don't worry! The system displays a warning message and prompts to confirm the deletion. 

7.He answers with 'No'.The system comes back to the previous.

8.He clicks UC:CommitIETM button and saves the IETM new version as "IETM2.0".

2.UC:NotifyIETM is activited. Alarm sounds. The A:IETM Maintainer stops his work immediately to deal with the emergency.

2. A:A:Technician, IETMmaintainer, A:Supervirm and act properly and immediately.

2. The A:IETM Maintainer sets the disk into the laufwerk and activates the "UC:InstallPackage" function. The system set up the IETM Pachage automatically.

3. The A:IETM Maintainer invokes the "Commit IETM" to affirm the change.

4. The A:IETM Maintainer activates the " UC:EditIETM" function to write the new UT:Help information into IETM.

5. After that, he clicks " UC:CommitIETM" button to affirm the change.

note: as A:Technician must acknowledge every workstep to proceed in his workflow -> he can only invoke this UC when he wants to acknowledge the current workstep -> no further exceptions

• Homer sits in the control room and eats a donut
• He gets e-mail notification of a work order for the bimonthly check of the Helium Flushing System
• He finishes his donut
• He supplements his working clothes with a hard hat and goggles - the hard hat includes a microphone and headphones and the goggles have an integrated computer display. The power supply, wireless networking, and sensors for his wearable computer are designed into his lab coat.
• He authenticates himself via voice, biometrical sensors, or smartcard
• The system welcomes him with a voice and text message ?Welcome to the bimonthly Helium Flushing System check! My sensors indicate that your current location is the Control Room. You can let me know at any time if you require navigational aid to find the Helium Flushing System or other locations in the building.?
• Since he only had half a cup of coffee, he answers - ?Err.. what did you just say??
• The system replies, slightly slower, ?You can let me know at any time if you require navigational aid to find the Helium Flushing System or other locations in the building.?
• Homer answers ?Okay, please do that.?
• His goggles now display a floor plan of the facility on which his location, the Helium Flushing System, and the path are highlighted.
• The display indicates that there are required tools for the maintenance check

Homer asks ?Where do I get the required equipment for this procedure??
• The system answers ?In Storage Room 42, Cabinet 9 - Do you want me to include this in your path?? - He answers ?Yes, please.?

The system highlights the room on the floor plan and updates the path.
• Homer picks up the equipment in Storage Room 42 and continues on the indicated path to the Helium Flushing System.
• Upon entering the room containing the Helium Flushing System the computer says ?Congratulations Homer, you found the Helium Flushing System! I can highlight the relevant system components for you.? - Homer thinks aloud ?Hmm.. It would be nice if the system components were highlighted.? which the system interprets as a positive answer.
• The display in his goggles augments his field of vision by highlighting the components

Note, at this point if AR mode had not be used, the conversational mode would have been used to look up the appropriate procedure (see flowchart diagram and schematics of the procedure), and continue with just the dialogue of the following.

 
• Upon request by the technician, the display updates to the first step of the maintenance procedure . The display in his goggles augments his field of vision by highlighting a valve, labelling it V2000, and displaying the word ?CLOSE? next to it.

On his headphones Homer hears ?Close valve V2000.? which he does. [Step 2.1]
• Homer clicks the next button and says ?okay? to himself.
• The system assists him with the further steps of the procedure similarly. [Step 2.2 to Step 2.8]
• After replacing the Helium bottle at valve V2000 [Step 3.1] he then follows Step 3.2, reopening the valve V2000.
• The display updates to a countdown waiting screen indicating the time he has to wait for the pressure to level off.
• He grumpily asks ?Why do I have to wait??

The system answers politely: ?The minimum time for the pressure to level off is two minutes?.
• Homer thinks aloud ?Oh! I see!?

The systems prompts him to enter the indicated pressure on PI2082: It displays ?Pressure on PI 2082? _____ mbar? and says ?Please tell me the p?? - Homer barges in ?two twenty two?.
• The number 22 appears in the input field. 
• The system replies ?Since the indicated pressure is only 22 mbar, we are now switching to the Failure of Helium Flushing System procedure.?
• Homer says ?No, the pressure was two hundred twenty two?. The system replies ?Returning to bimonthly check procedure?. The input field is updated to the number 222. The system says ?Since the indicated pressure is only 222 mbar, more Helium is needed. Close valve V2000 ?? and Homer has to repeat the steps 3.1 to 3.3.
• The next time the reading is 420 mbar, and the system informs him that this concludes his bimonthly maintenance check procedure.
• Homer returns to the Control Room and eats another donut. Mr. Smithers monitored Homers progress during the entire procedure on his monitor, which displayed in detail the location, actions, and timestamps for every step Homer followed in the manual.

Note: the conversational mode also supports requests to repeat a previous pressure reading, the last sentence or other intra-page commands; to navigate to other steps (inter-page commands); or enable input/output channels (meta-commands).